Heterozygous means that an organism has two different alleles of a gene. For example, pea plants can have red flowers and either be homozygous dominant (red-red), or heterozygous (red-white). If they have white flowers, then they are homozygous recessive (white-white).
Jon Gosselin opened up to Us Weekly about working at TGI Fridays in Lancaster, Pennsylvania, explaining that he took the job because he has a passion for cooking and charity.
Discovering a Material That's Harder Than Diamond. by Robert H. Wentorf, Jr. Dr. Wentorf is Distinguished Research Professor of Chemical Engineering at Rensselaer Polytechnic Institute. He is a member of the National Academy of Engineering, has been granted 44 U.S. patents, and has received the Ipatieff Prize from the American Chemical Society.